A tonne (about 2204.6 pounds) is not exactly the same as a long ton (2240 pounds). Because "ton" and "tonne" usually have the same pronunciation, the phrase "metric ton" is frequently used for "tonne" where disambiguation is required.

In the 1970s the British steel industry promoted the pronunciation /ˈtʌni/ to help avoid confusion. The pronunciation /tɒn/ has also been used for the same reason.

The metric ton or 'tonne' is accepted as a synonym for the megagramme, and this form Is to be preferred on the grounds of brevity and familiarity in the industry. It may be as well to use the pronunciation 'tunnie' until the risk of confusion with the old ton has passed.

1972, Which, May 1972

The British Steel Corporation, going metric but realising the possible confusion between a ton and a tonne (1,000 kilograms) has directed its staff to pronounce ‘tonne’ ‘tunnie’.

Compare Catawbanepe(ⁿ), nəpe(ⁿ), nepaⁿ, dəpe(ⁿ), dapa(ⁿ), dəpən, dube. Compare also noponne, which features in the word for "ten". Two Proto-Siouan roots for "one" can be reconstructed: Proto-Siouan-Catawban*nǫ(ːsa), rǫ(ːsa) (apparently whence this word) and *wįyą, each one found in one branch and almost entirely missing from the other. (*nǫ is importantly also found in Quapaw hi nǫxtį "once, one time", where -xtį is the morpheme denoting "_ times".)[1]